While there are no big overarching secrets and hidden dialogue in Part 2 compared to Part 1, there are some little hidden details that are left up to RNG or choices made in either the base game or Part 1.

These will be detailed in the following spoilers.

Starting from Chapter 5 Naomi gets mentioned a few times throughout the mod. While she doesn't actually appear in the mod, references to her are either based on AWBH or A Solitary Mind depending on an RNG Dice Roll (1d10, if under 6 it's ASM, if it's over 5 then it's AWBH)

In Chapter 6 IF you go grocery shopping with Sebastian some text is different if you've actually checked the grocery store shelves in Maverick's date in Part 1

Furthermore in Chapter 6 The big anti-meteor laser can either be Red or Blue colored, with the names Crimson Star and Cobalt Moon, this is a reference to MegaMan Battle Network 4 - Red Sun/Blue Moon. Laser color and name is decided by RNG (1d100, under 50 means Blue, over 50 means Red) this is purely cosmetic and has no bearing on the story.

In Chapter 7 The 3 main types of objections, Hearsay, Leading and Relevancy are indeed a reference to the Depp v Heard case, and the myriad of "Objection hearsay!" memes that it spawned.

MASSIVE spoiler to the ending of this mod below!

In Chapter 8 Zhong accompanies the player to the jewelry store to buy a ring for Anna IF you've played his date in the base game. Because people were on my case for "not having enough Zhong" in Part 1.

Also in Chapter 8 Where you get the option to either give Reza his gun with one bullet (A reference to Pirates of the Caribbean) or shoot him in the knee, IF you have played the Evil ending of the game you also get a third hidden option to just outright kill Reza. BE AWARE that this will immediately irreparably destroy your friendship with Maverick, so beware the consequences!

In Chapter 9 Check the Status Screen when Emera tells you to kiss Anna.